WO2009154957A3 - Light guide panal with light turning microstructure, method of fabrication thereof, and display device - Google Patents

Light guide panal with light turning microstructure, method of fabrication thereof, and display device Download PDF

Info

Publication number
WO2009154957A3
WO2009154957A3 PCT/US2009/045186 US2009045186W WO2009154957A3 WO 2009154957 A3 WO2009154957 A3 WO 2009154957A3 US 2009045186 W US2009045186 W US 2009045186W WO 2009154957 A3 WO2009154957 A3 WO 2009154957A3
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
cover
light
interlayer
turning microstructure
Prior art date
Application number
PCT/US2009/045186
Other languages
French (fr)
Other versions
WO2009154957A2 (en
Inventor
Ion Bita
Gang Xu
Kollengode S. Narayanan
Russell W. Gruhlke
Marek Mienko
Lai Wang
Original Assignee
Qualcomm Mems Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Mems Technologies, Inc. filed Critical Qualcomm Mems Technologies, Inc.
Priority to CN2009801195254A priority Critical patent/CN102047155B/en
Priority to BRPI0913042A priority patent/BRPI0913042A2/en
Priority to JP2011511757A priority patent/JP5451754B2/en
Priority to EP09767269A priority patent/EP2291694A2/en
Priority to CA2726120A priority patent/CA2726120A1/en
Publication of WO2009154957A2 publication Critical patent/WO2009154957A2/en
Publication of WO2009154957A3 publication Critical patent/WO2009154957A3/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016Grooves, prisms, gratings, scattering particles or rough surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065Manufacturing aspects; Material aspects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y20/00Nanooptics, e.g. quantum optics or photonic crystals
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/00362-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making

Abstract

A illumination device comprises a light guide having a first end for receiving light and configured to support propagation of light along the length of the light guide. A turning microstructure is disposed on a first side of the light guide configured to turn light incident on the first side and to direct the light out a second opposite side of the light guide, wherein the turning microstructure comprises a plurality of indentations. A cover is physically coupled to the light guide and disposed over the turning microstructure. An interlayer is between the cover and the light guide, wherein the interlayer physically couples the cover to the light guide. In some embodimentss the interlayer is omitted and the cover makes direct contact with the light guide. A plurality of open regions is between the interlayer or the cover and the plurality of indentations. Various embodiments include methods of coupling the cover to the light guide with or without interlayer while preserving open regions between the cover and plurality of indentations.
PCT/US2009/045186 2008-05-28 2009-05-26 Front light devices and methods of fabrication thereof WO2009154957A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2009801195254A CN102047155B (en) 2008-05-28 2009-05-26 Light guide panel with light turning microstructure, method of fabrication thereof, and display device
BRPI0913042A BRPI0913042A2 (en) 2008-05-28 2009-05-26 lighting devices and their manufacturing methods
JP2011511757A JP5451754B2 (en) 2008-05-28 2009-05-26 Optical waveguide panel having turning microstructure, method for manufacturing the same, and display device
EP09767269A EP2291694A2 (en) 2008-05-28 2009-05-26 Light guide panel with light turning microstructure, method of fabrication thereof, and display device
CA2726120A CA2726120A1 (en) 2008-05-28 2009-05-26 Front light devices and methods of fabrication thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5660108P 2008-05-28 2008-05-28
US61/056,601 2008-05-28

Publications (2)

Publication Number Publication Date
WO2009154957A2 WO2009154957A2 (en) 2009-12-23
WO2009154957A3 true WO2009154957A3 (en) 2010-03-18

Family

ID=41120028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/045186 WO2009154957A2 (en) 2008-05-28 2009-05-26 Front light devices and methods of fabrication thereof

Country Status (10)

Country Link
US (2) US8346048B2 (en)
EP (1) EP2291694A2 (en)
JP (2) JP5451754B2 (en)
KR (1) KR20110028595A (en)
CN (2) CN103149623A (en)
BR (1) BRPI0913042A2 (en)
CA (1) CA2726120A1 (en)
RU (1) RU2010147803A (en)
TW (1) TW201007090A (en)
WO (1) WO2009154957A2 (en)

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